How Jim Harbaugh finally pumped up the volume

After waiting nearly two months for a new sound system for his team’s practice field, Jim Harbaugh took matters into his own hands.

On Wednesday, the Niners had rock-concert-sized speakers – each about five feet tall and three feet wide – in Santa Clara in advance of their game Sunday at raucous Ford Field against the Lions.

Harbaugh said the Niners had been “trying to get that done for about eight weeks,” but declined to say what had been holding up Operation More Decibels.

“It would just frustrate me to go into that,” he said.

As it turns out, Harbaugh, presumably tired of waiting, drew on a connection from his time at Stanford to get his speakers.

During one of his seasons at Stanford, the Cardinal played a string of consecutive home games and therefore couldn’t practice at Stanford Stadium during the week. Harbaugh wanted crowd noise piped in at their practice field, so the Stanford hired a company to come to each practice and blare its super-sized speakers.

That was expensive, though, so Stanford eventually had Gotham-sized speakers installed at their practice field, explained Stanford director of football operations Matt Doyle on Wednesday.

It sounds like a spiffy sound system. It works remotely and spits out the various tracks with a touch of an iPod.